Armored pneumatic tire



June 'O 1924.

G. PAGELLA ARMORED PNEUMATIC TIRE Filed Jan. 8

Patented Junel l0, 1924.

NTED STATES earanr oprrnzla.4`

ARMOR/ED PEUMATIG TIRE.

Application filed January 8, 1924. Serial No. 685,053.

To all whom t may concern: v

Be it known that I, GENNARO PAGELLA, a subject of the King of Italy, residing at Louis, in the county of St. Louis and State of Missouri. have invented 'certain new' and useful Improvements in Armored Pneumatic Tires, of which the following is a specification.

This invention relates to certain new and useful improvements in pneumatic tires for vehicle wheels and has particular reference to an improved form of resilient tire shoe and fastening means therefor.

The primary object of the' invention is to provide a pneumatic tire shoe that will be extremely durable, substantially punctureproof and effective in preventing skidding.

A further obj ect is'to provide a pneumatic tire shoe which will possess a high degree of resiliency and may be manufactured at a comparatively low cost, as well as readily and easily applied to or removed from the felly of a vehicle wheel.

A further object of the invention is to provide a pneumatic tire shoe characterized by the provision of an 'external armor composed of transverse. overlapping resilient strips,y and wherein simple and effective means is provided upon each ofthe strips for cooperation "with the next adjacent strip at one side thereof so as to effectively maintain the said strips in their proper radial positions 'and against displacement circumferentially of the tire relative to each other, such means at the same time serving'to provide means for effectively preventing skidding.

' Still another object of the invention is to provide a tire shoe of the above kind, wherein the same is circumferentially split at. its

' inner side and is provided along its edges with rigidly7 and permanently attached rings forming part of simple and durable means for effectively securing the tire upon the felly of *a vehicle wheel. c

With the' above general objectsvin view and others that will become apparent as the nature of the invention is better understood,` the same consists in the novel form,A combi-. nation, and 'arrangement of parts .hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing, wherein like reference characters indicate corresponding parts throughout the' l several views e p Al'igure 1 Yis a fragmentary side elevational view, partly broken away and vin section of a tire shoe constructed in accordance with the ypresent invention, and operativelyv ap-Y plied upon the felly of a vehicle wheel.

Figure 2 is a transverse sectional view of the device shown in Figure l, and 1- Figure 3 isa plan view of one of the lug carrying strips.

The present invention embodies, a tire shoe that is circumferentially split, as at 5, at its inner side as indicated in Figure 2, and that is also preferably ofcircularform in cross section, as is also shown in this view. The tire shoe embodies an inner lamination 6, preferably formed from canvas so as to be relatively thick for resisting bursting of the usual inner tube 7 that is vemployed withinv the shoe and that is iniated under pressure in the usual mannenthe air being introducedl through the usual valve stem 8. The tire shoe further preferablyincludes an outer lamination of soft rubber as indicated at 9 for protecting the canvas lamination 6 from the abrading effect of the external metallic Varmor to be hereinafter described. i l Y The tireshoe `further embodies an :exten nal metallic armor-that completely covers the outer laminationf9,`andjthat is composed ofra series lof transverse circular metallic strips 10 that are 4disposed :with their.r 'ad-,

jacent edges in overlappingrelation as indicated in Figure l, the ends" of the strips 1() being folded inwardly above the edges of the laminations 6 and -9 yas* indicated at 11 and riveted to the latter asrat 12 sothat the transverse strips 10 will be held at their ends in proper relation to eachother and to the laminations 6 and '9, at the same time forming a binding or reinforcement for the edges of said laminations'. 1Each strip'l() has a transversely disposed series of outwardly projecting lugs 13 rigid with the tread portions orcentral portion thereof, and these lugs are preferably fixed to transverse plates latthatare riveted or otherwise secured'to the strips 10. The vlug plates 13 are provided at yone end with overhanging lips as at 15 yadapted' to overlap the 4next adjacent strip 10 that is overlapped lonto the particular strip l() to which the'lug plates 14 are fixed, and by reason of this construction effective means is provided at the tread portions of the strips 10 for pre venting their relative circumferential dise placement wh'ch tends to take place when:

a vehicle equipped with tires constructed in accordance with the above is vstarted or stopped. ln other words, certain ot the lugs 13 will at all times-be engaged with the road and upon sudden turning of the wheel or stoppage of turning thereof, the tendency is to displace the lugs 13 circumferentially of the tire. A s these lugs are rigid with the transverse strips 10, and as they are overlapped in serial relation r. ith the succeeding strips, this strain is transmitted from one strip to the other entirely around the tire, and displacement of the strips in a circumferential. direction is thereby effectively prevented. ln this manner destruction of the strips 10 isrendered highly unlikely, and detachment of the same from attaching rings, to be hereinafter made apparent is also rendered unlikely.

It is apparent that the lug plates 13 will additionally effectively serve as means for preventing longitudinal or sidewise slridding of vehicles equipped with wheels constructed in accordance with the above, and by reason ofthe fact that the strips 10 are made of resilient sheets of sheet met-al the resultant tirewill be highly resilient for effectively absorbing shocks and jars and at the same timewill not only serve to prevent pointed objects from penetratingthe inner tube 7, buty will also assist the laminations 6' and 9 in resisting bursting strains due to the'air pressure within the inner tube.

1 The invention embodies means for effectively mounting the tire shoe upon theusual felly 16 of avehicle wheel, which means embodies a pair of metallic rings, each including outer circular members 17 of arcuate cross section that are rigidly attached to the inner ends of the strips 10 by riveting or the like as at 18. Each fastening ring fu-rther embodies an inner cylindricallmember 19 that'is rigid with and projects from the inner edge of its respective members 17 and is adaptedk to be disposed upon the periphery of the felly as shown in Figure 2, the cylindrical member 19 of one of the rings being provided with radial inwardly projecting ears as at 20 upon the outer edge portion thereof adapted to lie flatly against onerside of the felly 16. A securing ring 21Y ofangular cross section is adapted to be disposed so that one ange thereof overlaps@ the member 19f of the ring which is provided with no ears and thissecuring 'ring 21 hasits other flange disposedv against the othersidek of the felly 18 and formed with openings aligned with thel openings of the ears-20fo`r reception of4 a plurality of bolts 22 that are also passed throughthe felly 16'.' Nuts 23 arethread'ed upon the bolts 22'to retain them `in place and hold the securing ring 215 tightly against the adjacent 'side of the felly 16 whereby the ring members carriedr by the1 tire shoe varelheld'ii'i adjacent relation upon the periphery of the felly as shown in Figure 2. lt is contemplated to construct the strip 10 of normally expanded form so that the rings carried by the tire shoe and embodying the members 17 and 19 will be separated and thereby slid of? of the felly in opposite directions or toward opposite sides upon removal of the bolts thereby facilitating removal of the tire from the wheel. The several parts will. of course. be properly formed so as to permit the passage of the valve stem 8 therethrough in the usual manner. lf found necessary or desirable, the members 17 and 19 of each of the fastening rings may be connected by reinforcing webs indicated at 24.

A tire constructed in accordance with the above will bel extremely light in weight' and simple and durable in construction, as Well as effective in operation for the intended purposes and advantages. Further, the tire may be applied or removedV with facility and ease.

Having thus described my invention, what l' claim as new and desire to secure by Letters Patent is:

1.-. 'A shoe adapted for reception of a pneumatic tube and circumferentially split at its inner side, said shoe havingv the erternal' metallic armor embodying an annular series of overlapping transversely disposed circular plates of resilient form, a series of transverse anti-skidding lug plates rigid with thetread portions of said armor strip, the lugs of each armor strip having overhanging lips overlapping the adjacent edges of the next adjacent armor strip for resisting relative displacement of the armor strips atA their tread portions and circumferentially of the shoe, said shoe further embodying `a lamination inwardly about which the ends of said armor strips are passed and secured for forming a binding reinforcement for the edge'of said lamination.

2. A shoe adapted for reception of a pneumatic tube andl circumferentially split at its inner side, saidshoehaving the external metallic armor embodying an annular series of overlapping transversely disposed cir cular plates of resilient form, a series of transverse anti-slridding lug plates rigid with thetread portions of said armor strip, the lugs of each armor strip having overhanging lips overlapping the adjacent edges of the neXtv adjacent armor strip for resist in relative displacement ofthe armor'strips atv their tread portions and circumferentially of the shoe said shoe further' embodying a lamination inwardly about which the ends of said armor strips are passed and securedy for forming a binding reinforcement for the edge of said lamination, and means for detachably mounting the tireshoe upon the felly of' avehicle wheel, said'. last' named means embodying a fastening ring along each edge of the shoe and including inner and outer circular members respectively of arcuate and fiat, cross section and rigidly connected. the arcuate members of said rings boing rigidly attached to the inner end portions of said armor strips.

3, A shoe adapted Jfor reception of a pneumatic tube and circumferentially Split at its inner side, said shoe having an external metallic armor embodying an annular series ot overlapping transversely disposed circular plates of resilient form, a series of transverse anti-skidding lug plates rigid with the tread portion of said armor strip` the lugs of each armor strip having overhanging lips overlapping the adjacent edges of the next adjacent armor strip for resisting relative displacement of the armor strips at their tread portions and circumferentially ot the shoe, said shoe further embodying an inner lamination of relatively `great thickness and composed of canvas and an outer layer of relatively thin rubber upon which the armor is secured. -l

In testimony whereof I aix my signature.

GENNARO PAGELLA. 

